* {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}

body {
	font-family: Arial, sans-serif;
	background: #f5f5f5;
}

/* 顶部导航盒子 */
.nav-box {
	background: white;
	border-bottom: 1px solid #eee;
	padding: 15px 20px;
	display: flex;
	justify-content: space-between;
	align-items: center;
}

.logo {
	display: flex;
	align-items: center;
	gap: 10px;
}

.logo img {
	width: 30px;
	height: 30px;
}

.logo h1 {
	font-size: 18px;
	color: #333;
}

/* 内容盒子 */
.content-box {
	background: white;
	margin: 1px 0;
	padding: 15px 20px;
	display: flex;
	justify-content: space-between;
	align-items: center;
	border-bottom: 1px solid #eee;
}

.breadcrumb {
	color: #666;
	font-size: 14px;
}

.back-btn {
	color: #666;
	text-decoration: none;
	font-size: 14px;
}

/* 响应式布局 */
@media (max-width: 768px) {

	.nav-box,
	.content-box {
		padding: 10px;
	}

	.logo h1 {
		font-size: 16px;
	}
}

.main-content {
	padding: 20px;
}

.search-bar {
	display: flex;
	justify-content: space-between;
	align-items: center;
	margin-bottom: 20px;
}

.title {
	font-size: 25px;
	color: #333;
}

.right-section {
	display: flex;
	align-items: center;
	gap: 20px;
}

.search-input {
	padding: 8px 12px;
	border: 1px solid #ddd;
	border-radius: 4px;
	width: 200px;
	font-size: 14px;
}

.semester {
	color: #666;
	font-size: 14px;
}

.grade-table {
	background: white;
	padding: 20px;
	border-radius: 4px;
	margin-bottom: 20px;
}

table {
	width: 100%;
	border-collapse: collapse;
}

th,
td {
	padding: 12px;
	text-align: left;
	border-bottom: 1px solid #eee;
}

th {
	color: #666;
	font-weight: normal;
	font-size: 14px;
}

td {
	font-size: 14px;
}

.status {
	color: #4CAF50;
}

.stats-container {
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	gap: 20px;
}

.stat-card {
	padding: 20px;
	border-radius: 4px;
	color: #333;
}

.stat-card.blue {
	background: #E3F2FD;
}

.stat-card.green {
	background: #E8F5E9;
}

.stat-card.purple {
	background: #F3E5F5;
}

.stat-card.orange {
	background: #FFF3E0;
}

.stat-title {
	font-size: 14px;
	color: #666;
	margin-bottom: 10px;
}

.stat-value {
	font-size: 24px;
	font-weight: bold;
}

.semester-select {
	padding: 8px 12px;
	border: 1px solid #ddd;
	border-radius: 4px;
	font-size: 14px;
	color: #666;
	background-color: white;
	cursor: pointer;
	outline: none;
	min-width: 200px;
}

.semester-select:hover {
	border-color: #bbb;
}

.semester-select:focus {
	border-color: #999;
}

.stats-title {
	font-size: 25px;
	color: #333;
	margin-bottom: 15px;
}